whie box and black box test

[duggisrinivasarao]

Black Box testing ensures that 'the product built is correct.'

It is a software testing technique in which the internal workings of the item to be tested are not known to the tester or they are not taken into consideration.

White Box Testing ensures that 'the product is built in a correct way'

It is a software testing technique in which an explicit knowledge of the internal workings of the item to be tested are tested.

I hope the info is useful.